99493 has 4 divisors (see below), whose sum is σ = 102220. Its totient is φ = 96768.

The previous prime is 99487. The next prime is 99497. The reversal of 99493 is 39499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42849 + 56644 = 207^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 99493 - 2⁹ = 98981 is a prime.

It is a Duffinian number.

99493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308 + ... + 1381.

It is an arithmetic number, because the mean of its divisors is an integer number (25555).

2⁹⁹⁴⁹³ is an apocalyptic number.

It is an amenable number.

99493 is a deficient number, since it is larger than the sum of its proper divisors (2727).

99493 is a wasteful number, since it uses less digits than its factorization.

99493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726.

The product of its digits is 8748, while the sum is 34.

The square root of 99493 is about 315.4251099707. The cubic root of 99493 is about 46.3373125418.

Adding to 99493 its product of digits (8748), we get a square (108241 = 329²).

The spelling of 99493 in words is "ninety-nine thousand, four hundred ninety-three".